The local concept to assess weldment with help of nano-indentation and FEM simulation
In this work the local mechanical behavior and fatigue resistance of the welding material were investigated with help of nano-indentation.By assuming a power-law strain hardening,the elastoplastic properties of the welding joint material were identified from inverse nano-indentation analysis with help of finite element simulation.With the known mechanical property of the weldment the fatigue should be described by the local stresses and strains.A critical plane based Cruse-Meyer model was introduced to predict the fatigue life of weldment.The predictions agree with experiments.Combined with critical distance concept the local fatigue life model was extended to predict fatigue life of holed specimens.The present work attempted to establish more reliable and more accurate a local fatigue and damage description of the weldment for engineering structures.
Nano-indentation Weldment Notched Fatigue Extended Cruse-Meyer Model Critical Distance Method
Jie Fang Huang Yuan
Department of Mechanical Engineering,University of Wuppertal,Germany
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）